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tee for robinair 15500 vacuum pump
I have a robinair 15500 that im looking to up size the tee for 1/2" hoses. Any one know what size and thread type fits inside the vacuum pump? I thought it was npt, but might be acme?
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800 992 9898 ask for Jeremiah.
They are AA Hydraulic Dervice. An authorized Roinair servicer.
I got my tee from them. Was a little pricey but I know I got the right part.
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 Originally Posted by georgehvac
I have a robinair 15500 that im looking to up size the tee for 1/2" hoses. Any one know what size and thread type fits inside the vacuum pump? I thought it was npt, but might be acme?
Where are U in MI? Im in Macomb.
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 Originally Posted by georgehvac
I have a robinair 15500 that im looking to up size the tee for 1/2" hoses. Any one know what size and thread type fits inside the vacuum pump? I thought it was npt, but might be acme?
FYI, if you go Appion hoses on 1/2 " you will only need 3/8" tee. Found that out the hard way. My tee is 1/1x1/2 with 3/8 reducers.
Hope this helps.
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Hey hvac5646- Im in Livonia enjoying the heat wave. Just checked my yj hoses, the're 1/2" flares.
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I called aa but they were closed. Ill try again wed. Thanks for the help!
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 Originally Posted by georgehvac
I called aa but they were closed. Ill try again wed. Thanks for the help!
good. go for the 1/2" tee in that case.
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I remember going through this. What size thread goes directly into the pump.
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 Originally Posted by energy star
I remember going through this. What size thread goes directly into the pump.
Can't remember the name of the thread ...but I know for sure it as tapered and the size was either 3/8 or 1/2.
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Hi George, I have a robinair 15444 VacuMaster & the thread into the vac pump is 7/8"ONO which is Dash 14 = 7/8"UNF &14TPI, parallel thread with O Ring champher in the pump. Cheers - Leigh
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 Originally Posted by LeighC
Hi George, I have a robinair 15444 VacuMaster & the thread into the vac pump is 7/8"ONO which is Dash 14 = 7/8"UNF &14TPI, parallel thread with O Ring champher in the pump. Cheers - Leigh
I don't think that is the same as the one the gent is talking about...I would post the intake opening but I have to find my manual.
I found it on Google.
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I called robinair product support and they couldnt find the inlet size- go figure. Same with aa. I ordered a 1/2" npt 1/2" flare tee off fleabay for 6$ to give a try. If it doesn't fit, no big loss.
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Thanks Leigh. It looks like 15500 is smaller than 7/8.
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